What's in SIERRA MADRE-CITY, WATER DEPT.'s water?
SIERRA MADRE-CITY, WATER DEPT. has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. It serves 11,000 people through 3,656 service connections.
Ranked against every other system in this dataset
SIERRA MADRE-CITY, WATER DEPT. has 6 violations on record in total, 5 of thems health-based - ranking it 3,836th of 12,903 systems by violation count, the 70th percentile nationally.
How SIERRA MADRE-CITY, WATER DEPT. compares within CA
Among the 803 CA systems in this dataset, the average is 5.8 health-based violations - SIERRA MADRE-CITY, WATER DEPT.'s 5 is at or below that. The filter guide explains what a violation like this actually calls for.
Most recent violation on record
The last violation EPA has on record for SIERRA MADRE-CITY, WATER DEPT. is from 2007-01-12 (health-based: 2007-01-12). Last reported to EPA: 06/22/2026.
What kind of problem, specifically
SIERRA MADRE-CITY, WATER DEPT.'s flagged contaminants and rule violations, grouped by what they actually mean for a filter choice rather than left as EPA's raw code list:
- Microbial contamination / treatment technique - flagged from: Coliform (TCR)
- Other regulated metals - flagged from: Fluoride
The most severe category on record is microbial contamination / treatment technique, which points toward a microbial-class filter if you want to address it directly.
What this data is and is not
SIERRA MADRE-CITY, WATER DEPT.'s numbers here come from its own required reporting to EPA under the Safe Drinking Water Act, not from an independent test of your glass of water. Between the utility's meter and SIERRA MADRE-CITY, WATER DEPT.'s customers' taps is household plumbing, invisible to a system-level record ranked 3,836th of 12,903 by violation count. The guide to what this data misses covers that gap.